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Image forming system, image processing apparatus, determination device, and image processing method

a technology of image processing and image, which is applied in the field of image processing system, image processing apparatus, determination device, and image processing method, can solve the problems of large coded image printed on printed materials by printers, large size of qr code, and high error-correction rate, so as to prevent users' convenience from reducing and low print precision

Inactive Publication Date: 2010-10-19
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an image forming system, method, and apparatus that can prevent users from being inconvenienced when using low-print precision image forming apparatus. This is achieved by adding error-correcting code to the original image information, and calculating an error detection rate when extracting the original information from the coded image. The system can then change the error-correcting rate based on the error detection rate to ensure optimal user convenience. The technical effect of this invention is to improve the quality of the printed image while maintaining user convenience.

Problems solved by technology

Meanwhile, a disadvantageous feature thereof is that the size of the QR code becomes larger as the error-correcting rate increases.
When a printer prints a coded image with a high error-correcting rate, the largeness of the coded image printed on a printed material by the printer has been considered as a problem in the conventional cases.
However, when the printer prints such a coded image with a low error-correcting rate, there is a problem that original information cannot be extracted from the coded image printed on the printed material by the printer.
This often occurs, for example, when the print precision of the printer is low.

Method used

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  • Image forming system, image processing apparatus, determination device, and image processing method
  • Image forming system, image processing apparatus, determination device, and image processing method
  • Image forming system, image processing apparatus, determination device, and image processing method

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first embodiment

[0050]FIG. 1 is a configuration diagram of an entire network system according to the present embodiment. Reference numeral 1001 is an MFP according to the present embodiment, which is provided with a scanner and a printer. The MFP 1001 can pass on an image read by using the scanner to a LAN 1010, and can perform printout of an image received from the LAN 1010 by using the printer (to form an image on a sheet). In other words, the MFP 1001 can function as image reading means, and also as an image forming apparatus.

[0051]In addition, the MFP 1001 can transmit an image read by using the scanner to any one of PSTN and ISDN 1030 with FAX transmission means, and can also perform printout of the image received from any one of the PSTN and ISDN 1030 by using the printer.

[0052]Reference numeral 1002 is a database server managing binary images and multivalued images, which are read by the MFP 1001, as databases. Reference numeral 1003 is a database client of the database server 1002, which ca...

second embodiment

[0121]In the first embodiment, the MFP 1100 performs reading of the coded image and information processing thereafter. In the present embodiment, the above-described information processing is performed in an external device provided with a CPU and storage means, such as a personal computer (PC).

[0122]FIG. 7 is a flowchart showing the processing relating to information obtained by performing error-correcting coding of an information source, according to the present embodiment.

[0123]In the present embodiment, the sheet including a coded image outputted from the MFP 1001 is read by a scanner (not shown) different from the MFP 1001 to acquire the coded image. The coded image is transmitted to a PC connected to the scanner through a network. In this manner, the PC acquires the coded image obtained by reading the sheet on which the coded image is formed.

[0124]At step S701, the PC receives the coded image transmitted from the scanner.

[0125]At step S702, similar to step S304, PC obtains inf...

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Abstract

An object of the present invention is to provide an image forming system, an image processing apparatus, a determination device, and image processing method that are capable of preventing users' convenience from reducing even when an image forming apparatus prints a coded image with a low print precision. A first MFP is connected through a LAN to a second MFP for performing error-correcting coding of original information, for creating a coded image by imaging the original information with the error-correcting code, and for forming the created coded image on a sheet. The first MFP extracts the original information from the coded image on the sheet obtained by reading the sheet on which the coded image is formed. Thereafter, the first MFP transmits to the second MFP an error detection rate at the time when the original information is extracted.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an image forming system, an image processing apparatus, a determination device, and an image processing method. More specifically, the present invention relates to an image forming system, an image processing apparatus, a determination device and an image processing method for performing error-correcting coding of an information source by using an error-correcting code.[0003]2. Description of the Related Art[0004]In response to users' growing awareness of security or for the purpose of improving users' convenience, coded images (such as digital watermark images and two-dimensional barcode images) synthesized with an original image are more frequently printed by using a multifunction printer (MFP). As a two-dimensional barcode image, for example, a QR code is well-known.[0005]In order to ensure that original information can be eventually extracted from a coded image, in practice, an error...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H03M13/00
CPCH04N21/4117H04N21/43615H04N21/4425
Inventor SAKATA, KATUAKI
Owner CANON KK
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